<template>
  <div>
    <city-header @height="getHeaderHeight"></city-header>
    <city-search @height="getSearchHeight" :cities="cities"></city-search>
    <city-list :cities="cities" :hot="hotCities" :letter="letter"></city-list>
    <city-Alphabet
      :cities="cities"
      @change="handleLetterChange"
      :headerHeight="headerHeight"
      :searchHeight="searchHeight"
    >
    </city-Alphabet>
  </div>
</template>

<script>
import CityHeader from './components/Header'
import CitySearch from './components/Search'
import CityList from './components/List'
import CityAlphabet from './components/Alphabet'
import axios from 'axios'

export default {
  name: 'City',
  components: {
    CityHeader,
    CitySearch,
    CityList,
    CityAlphabet
  },
  data () {
    return {
      cities: {},
      hotCities: [],
      letter: '',
      headerHeight: null,
      searchHeight: null
    }
  },
  methods: {
    getCityInfo () {
      axios.get('/api/city.json').then(this.handleGetCityInfoSucc)
    },
    handleGetCityInfoSucc (res) {
      res = res.data
      if (res.ret && res.data) {
        const data = res.data
        this.cities = data.cities
        this.hotCities = data.hotCities
      }
    },
    handleLetterChange (letter) {
      this.letter = letter
    },
    getHeaderHeight (height) {
      this.headerHeight = height
    },
    getSearchHeight (height) {
      this.searchHeight = height
    }
  },
  mounted () {
    this.getCityInfo()
  }
}
</script>

<style>

</style>
